Member Avatar for xandermedia

Hello,
I just recently bought a new mobo, cpu, ram, and power supply. I installed them into my old compac box and started it; when i hit the power button the fan turns on, the leds light up and i can hear the drives going, but i get no display on the monitor. I know the monitor works cause i've used it before, any help would be great.

Parts:
m/b : Biostar TA760G M2+
cpu: AMD anthlon X2 64 bit processor
pwr: 480 w

thanx.

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  • Latest Post Latest Post by caperjack

Dani AI

Generated

A few targeted checks and explanations to add to 's report (Biostar TA760G M2+, an Athlon X2, 480W PSU in an older Compaq case). 's bench-test idea is a good start; the items below cover common causes that often hide behind a "fans spin but no display" symptom.

  • Confirm the CPU aux power is plugged: the 4-pin/8-pin ATX12V/EPS connector next to the CPU must be attached. The 24-pin alone can spin fans yet leave the CPU without the power needed to POST.
  • Verify video path: if a discrete PCIe GPU is present, the monitor must be on that card’s outputs (and the GPU’s 6/8-pin power plugged). If using onboard video, ensure the monitor input selection matches (VGA/DVI/HDMI).
  • Test a minimal single-DIMM configuration in the slot the manual lists as primary (one known-good stick, clips fully latched). Some boards will only POST with RAM in a specific slot.
  • Attach a system speaker and listen for BIOS beep codes; no beep or specific beep patterns point to CPU, RAM, or VGA faults—check the manual for code meanings.
  • Clear CMOS (jumper or remove battery for a few minutes) to eliminate bad BIOS settings.
  • Check BIOS CPU support: some Athlon X2 models require a newer BIOS. If the board shipped with an older BIOS, a BIOS update (or a temporary compatible CPU) may be required before that CPU will POST.
  • Inspect the CPU/socket for bent pins (AMD PGA chips) and verify the cooler is properly seated with thermal paste—physical damage or poor installation can prevent POST.
  • Swap or test the PSU if possible; weak/failed rails can let fans spin but prevent the system from initializing. Also check for shorting standoffs in the Compaq chassis.

If all above are tried and the board still shows no POST, document the tests performed (minimal boot, speaker beeps, CMOS cleared, BIOS version if known) and proceed with RMA. Grounding precautions and gentle handling when removing the cooler/CPU are essential.

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Member Avatar for caperjack

ok, try unplugging all drives and mouse ,keyboard and turn it on see what happens,if same thing remove ram and try ,same thing ,remove it all from the compaq box and set it up on the table and try it outside the box,maybe a short between motherboard and the box

Member Avatar for xandermedia

Thanks for the reply, though it still doesn't work. i think the motherboard is junk, i think i should return it to newegg.

Once again thanx caperjack, i appriciate your help.

Member Avatar for caperjack

Thanks for the reply, though it still doesn't work. i think the motherboard is junk, i think i should return it to newegg.

Once again thanx caperjack, i appriciate your help.

your welcome

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